The Location Extension (loc) is not tested in UAF. It is known to have at least 2 implementations but those haven't been
tested as far as we know. Note that this extension, as supported in the WebAuthn specification, would be reusing an existing
interface (Coordinates) as defined in the Geolocation API.

2. Implementations

This is a partial anonymized list vendors providing one or more implementations passing all the tests listed above (client and/or authenticator).